Design of MPEG-2 video test bitstreams

The MPEG-2, video specification is quite flexible. Many parameters in the s tandard must be interpreted correctly for a decoder to reconstruct encoded video data. It needs a well defined procedure to verify that a MPEG-2 decod er is compliant with the standard. This paper presents a design method of MPEG-2 video test bitstreams, which examines whether an MPEG decoder under test (D.U.T.) produces correct image s. And the test bitstreams are designed to produce a uniform gray image if the DUT complies with the standard to facilitate detection of error. The pr esented test bitstream is composed of two parts: the first part generates a n image by varying a test parameter and the second part is predictive coded with zero motion vector and a difference image which is the negative of th e correct test pattern. It will cancel the test pattern and a uniform image will result if the decoder conforms to the standard. Also we analyze chara cteristics of test bitstream in public domain and present design method of test bitstreams.